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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- E R R O U T C --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2006, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- Warning! Error messages can be generated during Gigi processing by direct
-- calls to error message routines, so it is essential that the processing
-- in this body be consistent with the requirements for the Gigi processing
-- environment, and that in particular, no disallowed table expansion is
-- allowed to occur.
with Casing; use Casing;
with Debug; use Debug;
with Err_Vars; use Err_Vars;
with Namet; use Namet;
with Opt; use Opt;
with Output; use Output;
with Sinput; use Sinput;
with Snames; use Snames;
with Targparm; use Targparm;
with Uintp; use Uintp;
package body Erroutc is
-----------------------
-- Local Subprograms --
-----------------------
---------------
-- Add_Class --
---------------
procedure Add_Class is
begin
if Class_Flag then
Class_Flag := False;
Set_Msg_Char (''');
Get_Name_String (Name_Class);
Set_Casing (Identifier_Casing (Flag_Source), Mixed_Case);
Set_Msg_Name_Buffer;
end if;
end Add_Class;
----------------------
-- Buffer_Ends_With --
----------------------
function Buffer_Ends_With (S : String) return Boolean is
Len : constant Natural := S'Length;
begin
return
Msglen > Len
and then Msg_Buffer (Msglen - Len) = ' '
and then Msg_Buffer (Msglen - Len + 1 .. Msglen) = S;
end Buffer_Ends_With;
-------------------
-- Buffer_Remove --
-------------------
procedure Buffer_Remove (S : String) is
begin
if Buffer_Ends_With (S) then
Msglen := Msglen - S'Length;
end if;
end Buffer_Remove;
-----------------------------
-- Check_Duplicate_Message --
-----------------------------
procedure Check_Duplicate_Message (M1, M2 : Error_Msg_Id) is
L1, L2 : Error_Msg_Id;
N1, N2 : Error_Msg_Id;
procedure Delete_Msg (Delete, Keep : Error_Msg_Id);
-- Called to delete message Delete, keeping message Keep. Marks
-- all messages of Delete with deleted flag set to True, and also
-- makes sure that for the error messages that are retained the
-- preferred message is the one retained (we prefer the shorter
-- one in the case where one has an Instance tag). Note that we
-- always know that Keep has at least as many continuations as
-- Delete (since we always delete the shorter sequence).
----------------
-- Delete_Msg --
----------------
procedure Delete_Msg (Delete, Keep : Error_Msg_Id) is
D, K : Error_Msg_Id;
begin
D := Delete;
K := Keep;
loop
Errors.Table (D).Deleted := True;
-- Adjust error message count
if Errors.Table (D).Warn or Errors.Table (D).Style then
Warnings_Detected := Warnings_Detected - 1;
else
Total_Errors_Detected := Total_Errors_Detected - 1;
if Errors.Table (D).Serious then
Serious_Errors_Detected := Serious_Errors_Detected - 1;
end if;
end if;
-- Substitute shorter of the two error messages
if Errors.Table (K).Text'Length > Errors.Table (D).Text'Length then
Errors.Table (K).Text := Errors.Table (D).Text;
end if;
D := Errors.Table (D).Next;
K := Errors.Table (K).Next;
if D = No_Error_Msg or else not Errors.Table (D).Msg_Cont then
return;
end if;
end loop;
end Delete_Msg;
-- Start of processing for Check_Duplicate_Message
begin
-- Both messages must be non-continuation messages and not deleted
if Errors.Table (M1).Msg_Cont
or else Errors.Table (M2).Msg_Cont
or else Errors.Table (M1).Deleted
or else Errors.Table (M2).Deleted
then
return;
end if;
-- Definitely not equal if message text does not match
if not Same_Error (M1, M2) then
return;
end if;
-- Same text. See if all continuations are also identical
L1 := M1;
L2 := M2;
loop
N1 := Errors.Table (L1).Next;
N2 := Errors.Table (L2).Next;
-- If M1 continuations have run out, we delete M1, either the
-- messages have the same number of continuations, or M2 has
-- more and we prefer the one with more anyway.
if N1 = No_Error_Msg or else not Errors.Table (N1).Msg_Cont then
Delete_Msg (M1, M2);
return;
-- If M2 continuatins have run out, we delete M2
elsif N2 = No_Error_Msg or else not Errors.Table (N2).Msg_Cont then
Delete_Msg (M2, M1);
return;
-- Otherwise see if continuations are the same, if not, keep both
-- sequences, a curious case, but better to keep everything!
elsif not Same_Error (N1, N2) then
return;
-- If continuations are the same, continue scan
else
L1 := N1;
L2 := N2;
end if;
end loop;
end Check_Duplicate_Message;
------------------------
-- Compilation_Errors --
------------------------
function Compilation_Errors return Boolean is
begin
return Total_Errors_Detected /= 0
or else (Warnings_Detected /= 0
and then Warning_Mode = Treat_As_Error);
end Compilation_Errors;
------------------
-- Debug_Output --
------------------
procedure Debug_Output (N : Node_Id) is
begin
if Debug_Flag_1 then
Write_Str ("*** following error message posted on node id = #");
Write_Int (Int (N));
Write_Str (" ***");
Write_Eol;
end if;
end Debug_Output;
----------
-- dmsg --
----------
procedure dmsg (Id : Error_Msg_Id) is
E : Error_Msg_Object renames Errors.Table (Id);
begin
w ("Dumping error message, Id = ", Int (Id));
w (" Text = ", E.Text.all);
w (" Next = ", Int (E.Next));
w (" Sfile = ", Int (E.Sfile));
Write_Str
(" Sptr = ");
Write_Location (E.Sptr);
Write_Eol;
Write_Str
(" Optr = ");
Write_Location (E.Optr);
Write_Eol;
w (" Line = ", Int (E.Line));
w (" Col = ", Int (E.Col));
w (" Warn = ", E.Warn);
w (" Style = ", E.Style);
w (" Serious = ", E.Serious);
w (" Uncond = ", E.Uncond);
w (" Msg_Cont = ", E.Msg_Cont);
w (" Deleted = ", E.Deleted);
Write_Eol;
end dmsg;
------------------
-- Get_Location --
------------------
function Get_Location (E : Error_Msg_Id) return Source_Ptr is
begin
return Errors.Table (E).Sptr;
end Get_Location;
----------------
-- Get_Msg_Id --
----------------
function Get_Msg_Id return Error_Msg_Id is
begin
return Cur_Msg;
end Get_Msg_Id;
-----------------------
-- Output_Error_Msgs --
-----------------------
procedure Output_Error_Msgs (E : in out Error_Msg_Id) is
P : Source_Ptr;
T : Error_Msg_Id;
S : Error_Msg_Id;
Flag_Num : Pos;
Mult_Flags : Boolean := False;
begin
S := E;
-- Skip deleted messages at start
if Errors.Table (S).Deleted then
Set_Next_Non_Deleted_Msg (S);
end if;
-- Figure out if we will place more than one error flag on this line
T := S;
while T /= No_Error_Msg
and then Errors.Table (T).Line = Errors.Table (E).Line
and then Errors.Table (T).Sfile = Errors.Table (E).Sfile
loop
if Errors.Table (T).Sptr > Errors.Table (E).Sptr then
Mult_Flags := True;
end if;
Set_Next_Non_Deleted_Msg (T);
end loop;
-- Output the error flags. The circuit here makes sure that the tab
-- characters in the original line are properly accounted for. The
-- eight blanks at the start are to match the line number.
if not Debug_Flag_2 then
Write_Str (" ");
P := Line_Start (Errors.Table (E).Sptr);
Flag_Num := 1;
-- Loop through error messages for this line to place flags
T := S;
while T /= No_Error_Msg
and then Errors.Table (T).Line = Errors.Table (E).Line
and then Errors.Table (T).Sfile = Errors.Table (E).Sfile
loop
-- Loop to output blanks till current flag position
while P < Errors.Table (T).Sptr loop
if Source_Text (Errors.Table (T).Sfile) (P) = ASCII.HT then
Write_Char (ASCII.HT);
else
Write_Char (' ');
end if;
P := P + 1;
end loop;
-- Output flag (unless already output, this happens if more
-- than one error message occurs at the same flag position).
if P = Errors.Table (T).Sptr then
if (Flag_Num = 1 and then not Mult_Flags)
or else Flag_Num > 9
then
Write_Char ('|');
else
Write_Char (Character'Val (Character'Pos ('0') + Flag_Num));
end if;
P := P + 1;
end if;
Set_Next_Non_Deleted_Msg (T);
Flag_Num := Flag_Num + 1;
end loop;
Write_Eol;
end if;
-- Now output the error messages
T := S;
while T /= No_Error_Msg
and then Errors.Table (T).Line = Errors.Table (E).Line
and then Errors.Table (T).Sfile = Errors.Table (E).Sfile
loop
Write_Str (" >>> ");
Output_Msg_Text (T);
if Debug_Flag_2 then
while Column < 74 loop
Write_Char (' ');
end loop;
Write_Str (" <<<");
end if;
Write_Eol;
Set_Next_Non_Deleted_Msg (T);
end loop;
E := T;
end Output_Error_Msgs;
------------------------
-- Output_Line_Number --
------------------------
procedure Output_Line_Number (L : Logical_Line_Number) is
D : Int; -- next digit
C : Character; -- next character
Z : Boolean; -- flag for zero suppress
N, M : Int; -- temporaries
begin
if L = No_Line_Number then
Write_Str (" ");
else
Z := False;
N := Int (L);
M := 100_000;
while M /= 0 loop
D := Int (N / M);
N := N rem M;
M := M / 10;
if D = 0 then
if Z then
C := '0';
else
C := ' ';
end if;
else
Z := True;
C := Character'Val (D + 48);
end if;
Write_Char (C);
end loop;
Write_Str (". ");
end if;
end Output_Line_Number;
---------------------
-- Output_Msg_Text --
---------------------
procedure Output_Msg_Text (E : Error_Msg_Id) is
begin
if Errors.Table (E).Warn then
Write_Str ("warning: ");
elsif Errors.Table (E).Style then
null;
elsif Opt.Unique_Error_Tag then
Write_Str ("error: ");
end if;
Write_Str (Errors.Table (E).Text.all);
end Output_Msg_Text;
--------------------
-- Purge_Messages --
--------------------
procedure Purge_Messages (From : Source_Ptr; To : Source_Ptr) is
E : Error_Msg_Id;
function To_Be_Purged (E : Error_Msg_Id) return Boolean;
-- Returns True for a message that is to be purged. Also adjusts
-- error counts appropriately.
------------------
-- To_Be_Purged --
------------------
function To_Be_Purged (E : Error_Msg_Id) return Boolean is
begin
if E /= No_Error_Msg
and then Errors.Table (E).Sptr > From
and then Errors.Table (E).Sptr < To
then
if Errors.Table (E).Warn or Errors.Table (E).Style then
Warnings_Detected := Warnings_Detected - 1;
else
Total_Errors_Detected := Total_Errors_Detected - 1;
if Errors.Table (E).Serious then
Serious_Errors_Detected := Serious_Errors_Detected - 1;
end if;
end if;
return True;
else
return False;
end if;
end To_Be_Purged;
-- Start of processing for Purge_Messages
begin
while To_Be_Purged (First_Error_Msg) loop
First_Error_Msg := Errors.Table (First_Error_Msg).Next;
end loop;
E := First_Error_Msg;
while E /= No_Error_Msg loop
while To_Be_Purged (Errors.Table (E).Next) loop
Errors.Table (E).Next :=
Errors.Table (Errors.Table (E).Next).Next;
end loop;
E := Errors.Table (E).Next;
end loop;
end Purge_Messages;
----------------
-- Same_Error --
----------------
function Same_Error (M1, M2 : Error_Msg_Id) return Boolean is
Msg1 : constant String_Ptr := Errors.Table (M1).Text;
Msg2 : constant String_Ptr := Errors.Table (M2).Text;
Msg2_Len : constant Integer := Msg2'Length;
Msg1_Len : constant Integer := Msg1'Length;
begin
return
Msg1.all = Msg2.all
or else
(Msg1_Len - 10 > Msg2_Len
and then
Msg2.all = Msg1.all (1 .. Msg2_Len)
and then
Msg1 (Msg2_Len + 1 .. Msg2_Len + 10) = ", instance")
or else
(Msg2_Len - 10 > Msg1_Len
and then
Msg1.all = Msg2.all (1 .. Msg1_Len)
and then
Msg2 (Msg1_Len + 1 .. Msg1_Len + 10) = ", instance");
end Same_Error;
-------------------
-- Set_Msg_Blank --
-------------------
procedure Set_Msg_Blank is
begin
if Msglen > 0
and then Msg_Buffer (Msglen) /= ' '
and then Msg_Buffer (Msglen) /= '('
and then Msg_Buffer (Msglen) /= '-'
and then not Manual_Quote_Mode
then
Set_Msg_Char (' ');
end if;
end Set_Msg_Blank;
-------------------------------
-- Set_Msg_Blank_Conditional --
-------------------------------
procedure Set_Msg_Blank_Conditional is
begin
if Msglen > 0
and then Msg_Buffer (Msglen) /= ' '
and then Msg_Buffer (Msglen) /= '('
and then Msg_Buffer (Msglen) /= '"'
and then not Manual_Quote_Mode
then
Set_Msg_Char (' ');
end if;
end Set_Msg_Blank_Conditional;
------------------
-- Set_Msg_Char --
------------------
procedure Set_Msg_Char (C : Character) is
begin
-- The check for message buffer overflow is needed to deal with cases
-- where insertions get too long (in particular a child unit name can
-- be very long).
if Msglen < Max_Msg_Length then
Msglen := Msglen + 1;
Msg_Buffer (Msglen) := C;
end if;
end Set_Msg_Char;
---------------------------------
-- Set_Msg_Insertion_File_Name --
---------------------------------
procedure Set_Msg_Insertion_File_Name is
begin
if Error_Msg_Name_1 = No_Name then
null;
elsif Error_Msg_Name_1 = Error_Name then
Set_Msg_Blank;
Set_Msg_Str ("<error>");
else
Set_Msg_Blank;
Get_Name_String (Error_Msg_Name_1);
Set_Msg_Quote;
Set_Msg_Name_Buffer;
Set_Msg_Quote;
end if;
-- The following assignments ensure that the second and third percent
-- insertion characters will correspond to the Error_Msg_Name_2 and
-- Error_Msg_Name_3 as required. We suppress possible validity checks in
-- case operating in -gnatVa mode, and Error_Msg_Name_2/3 is not needed
-- and has not been set.
declare
pragma Suppress (Range_Check);
begin
Error_Msg_Name_1 := Error_Msg_Name_2;
Error_Msg_Name_2 := Error_Msg_Name_3;
end;
end Set_Msg_Insertion_File_Name;
-----------------------------------
-- Set_Msg_Insertion_Line_Number --
-----------------------------------
procedure Set_Msg_Insertion_Line_Number (Loc, Flag : Source_Ptr) is
Sindex_Loc : Source_File_Index;
Sindex_Flag : Source_File_Index;
begin
Set_Msg_Blank;
if Loc = No_Location then
Set_Msg_Str ("at unknown location");
elsif Loc = System_Location then
Set_Msg_Str ("in package System");
Set_Msg_Insertion_Run_Time_Name;
elsif Loc = Standard_Location then
Set_Msg_Str ("in package Standard");
elsif Loc = Standard_ASCII_Location then
Set_Msg_Str ("in package Standard.ASCII");
else
-- Add "at file-name:" if reference is to other than the source
-- file in which the error message is placed. Note that we check
-- full file names, rather than just the source indexes, to
-- deal with generic instantiations from the current file.
Sindex_Loc := Get_Source_File_Index (Loc);
Sindex_Flag := Get_Source_File_Index (Flag);
if Full_File_Name (Sindex_Loc) /= Full_File_Name (Sindex_Flag) then
Set_Msg_Str ("at ");
Get_Name_String
(Reference_Name (Get_Source_File_Index (Loc)));
Set_Msg_Name_Buffer;
Set_Msg_Char (':');
-- If in current file, add text "at line "
else
Set_Msg_Str ("at line ");
end if;
-- Output line number for reference
Set_Msg_Int (Int (Get_Logical_Line_Number (Loc)));
-- Deal with the instantiation case. We may have a reference to,
-- e.g. a type, that is declared within a generic template, and
-- what we are really referring to is the occurrence in an instance.
-- In this case, the line number of the instantiation is also of
-- interest, and we add a notation:
-- , instance at xxx
-- where xxx is a line number output using this same routine (and
-- the recursion can go further if the instantiation is itself in
-- a generic template).
-- The flag location passed to us in this situation is indeed the
-- line number within the template, but as described in Sinput.L
-- (file sinput-l.ads, section "Handling Generic Instantiations")
-- we can retrieve the location of the instantiation itself from
-- this flag location value.
-- Note: this processing is suppressed if Suppress_Instance_Location
-- is set True. This is used to prevent redundant annotations of the
-- location of the instantiation in the case where we are placing
-- the messages on the instantiation in any case.
if Instantiation (Sindex_Loc) /= No_Location
and then not Suppress_Instance_Location
then
Set_Msg_Str (", instance ");
Set_Msg_Insertion_Line_Number (Instantiation (Sindex_Loc), Flag);
end if;
end if;
end Set_Msg_Insertion_Line_Number;
----------------------------
-- Set_Msg_Insertion_Name --
----------------------------
procedure Set_Msg_Insertion_Name is
begin
if Error_Msg_Name_1 = No_Name then
null;
elsif Error_Msg_Name_1 = Error_Name then
Set_Msg_Blank;
Set_Msg_Str ("<error>");
else
Set_Msg_Blank_Conditional;
Get_Unqualified_Decoded_Name_String (Error_Msg_Name_1);
-- Remove %s or %b at end. These come from unit names. If the
-- caller wanted the (unit) or (body), then they would have used
-- the $ insertion character. Certainly no error message should
-- ever have %b or %s explicitly occurring.
if Name_Len > 2
and then Name_Buffer (Name_Len - 1) = '%'
and then (Name_Buffer (Name_Len) = 'b'
or else
Name_Buffer (Name_Len) = 's')
then
Name_Len := Name_Len - 2;
end if;
-- Remove upper case letter at end, again, we should not be getting
-- such names, and what we hope is that the remainder makes sense.
if Name_Len > 1
and then Name_Buffer (Name_Len) in 'A' .. 'Z'
then
Name_Len := Name_Len - 1;
end if;
-- If operator name or character literal name, just print it as is
-- Also print as is if it ends in a right paren (case of x'val(nnn))
if Name_Buffer (1) = '"'
or else Name_Buffer (1) = '''
or else Name_Buffer (Name_Len) = ')'
then
Set_Msg_Name_Buffer;
-- Else output with surrounding quotes in proper casing mode
else
Set_Casing (Identifier_Casing (Flag_Source), Mixed_Case);
Set_Msg_Quote;
Set_Msg_Name_Buffer;
Set_Msg_Quote;
end if;
end if;
-- The following assignments ensure that the second and third percent
-- insertion characters will correspond to the Error_Msg_Name_2 and
-- Error_Msg_Name_3 as required. We suppress possible validity checks in
-- case operating in -gnatVa mode, and Error_Msg_Name_1/2 is not needed
-- and has not been set.
declare
pragma Suppress (Range_Check);
begin
Error_Msg_Name_1 := Error_Msg_Name_2;
Error_Msg_Name_2 := Error_Msg_Name_3;
end;
end Set_Msg_Insertion_Name;
-------------------------------------
-- Set_Msg_Insertion_Reserved_Name --
-------------------------------------
procedure Set_Msg_Insertion_Reserved_Name is
begin
Set_Msg_Blank_Conditional;
Get_Name_String (Error_Msg_Name_1);
Set_Msg_Quote;
Set_Casing (Keyword_Casing (Flag_Source), All_Lower_Case);
Set_Msg_Name_Buffer;
Set_Msg_Quote;
end Set_Msg_Insertion_Reserved_Name;
-------------------------------------
-- Set_Msg_Insertion_Reserved_Word --
-------------------------------------
procedure Set_Msg_Insertion_Reserved_Word
(Text : String;
J : in out Integer)
is
begin
Set_Msg_Blank_Conditional;
Name_Len := 0;
while J <= Text'Last and then Text (J) in 'A' .. 'Z' loop
Name_Len := Name_Len + 1;
Name_Buffer (Name_Len) := Text (J);
J := J + 1;
end loop;
Set_Casing (Keyword_Casing (Flag_Source), All_Lower_Case);
Set_Msg_Quote;
Set_Msg_Name_Buffer;
Set_Msg_Quote;
end Set_Msg_Insertion_Reserved_Word;
-------------------------------------
-- Set_Msg_Insertion_Run_Time_Name --
-------------------------------------
procedure Set_Msg_Insertion_Run_Time_Name is
begin
if Targparm.Run_Time_Name_On_Target /= No_Name then
Set_Msg_Blank_Conditional;
Set_Msg_Char ('(');
Get_Name_String (Targparm.Run_Time_Name_On_Target);
Set_Casing (Mixed_Case);
Set_Msg_Str (Name_Buffer (1 .. Name_Len));
Set_Msg_Char (')');
end if;
end Set_Msg_Insertion_Run_Time_Name;
----------------------------
-- Set_Msg_Insertion_Uint --
----------------------------
procedure Set_Msg_Insertion_Uint is
begin
Set_Msg_Blank;
UI_Image (Error_Msg_Uint_1);
for J in 1 .. UI_Image_Length loop
Set_Msg_Char (UI_Image_Buffer (J));
end loop;
-- The following assignment ensures that a second carret insertion
-- character will correspond to the Error_Msg_Uint_2 parameter. We
-- suppress possible validity checks in case operating in -gnatVa mode,
-- and Error_Msg_Uint_2 is not needed and has not been set.
declare
pragma Suppress (Range_Check);
begin
Error_Msg_Uint_1 := Error_Msg_Uint_2;
end;
end Set_Msg_Insertion_Uint;
-----------------
-- Set_Msg_Int --
-----------------
procedure Set_Msg_Int (Line : Int) is
begin
if Line > 9 then
Set_Msg_Int (Line / 10);
end if;
Set_Msg_Char (Character'Val (Character'Pos ('0') + (Line rem 10)));
end Set_Msg_Int;
-------------------------
-- Set_Msg_Name_Buffer --
-------------------------
procedure Set_Msg_Name_Buffer is
begin
for J in 1 .. Name_Len loop
Set_Msg_Char (Name_Buffer (J));
end loop;
end Set_Msg_Name_Buffer;
-------------------
-- Set_Msg_Quote --
-------------------
procedure Set_Msg_Quote is
begin
if not Manual_Quote_Mode then
Set_Msg_Char ('"');
end if;
end Set_Msg_Quote;
-----------------
-- Set_Msg_Str --
-----------------
procedure Set_Msg_Str (Text : String) is
begin
for J in Text'Range loop
Set_Msg_Char (Text (J));
end loop;
end Set_Msg_Str;
------------------------------
-- Set_Next_Non_Deleted_Msg --
------------------------------
procedure Set_Next_Non_Deleted_Msg (E : in out Error_Msg_Id) is
begin
if E = No_Error_Msg then
return;
else
loop
E := Errors.Table (E).Next;
exit when E = No_Error_Msg or else not Errors.Table (E).Deleted;
end loop;
end if;
end Set_Next_Non_Deleted_Msg;
---------------------------
-- Set_Warnings_Mode_Off --
---------------------------
procedure Set_Warnings_Mode_Off (Loc : Source_Ptr) is
begin
-- Don't bother with entries from instantiation copies, since we
-- will already have a copy in the template, which is what matters
if Instantiation (Get_Source_File_Index (Loc)) /= No_Location then
return;
end if;
-- If last entry in table already covers us, this is a redundant
-- pragma Warnings (Off) and can be ignored. This also handles the
-- case where all warnings are suppressed by command line switch.
if Warnings.Last >= Warnings.First
and then Warnings.Table (Warnings.Last).Start <= Loc
and then Loc <= Warnings.Table (Warnings.Last).Stop
then
return;
-- Otherwise establish a new entry, extending from the location of
-- the pragma to the end of the current source file. This ending
-- point will be adjusted by a subsequent pragma Warnings (On).
else
Warnings.Increment_Last;
Warnings.Table (Warnings.Last).Start := Loc;
Warnings.Table (Warnings.Last).Stop :=
Source_Last (Current_Source_File);
end if;
end Set_Warnings_Mode_Off;
--------------------------
-- Set_Warnings_Mode_On --
--------------------------
procedure Set_Warnings_Mode_On (Loc : Source_Ptr) is
begin
-- Don't bother with entries from instantiation copies, since we
-- will already have a copy in the template, which is what matters
if Instantiation (Get_Source_File_Index (Loc)) /= No_Location then
return;
end if;
-- Nothing to do unless command line switch to suppress all warnings
-- is off, and the last entry in the warnings table covers this
-- pragma Warnings (On), in which case adjust the end point.
if (Warnings.Last >= Warnings.First
and then Warnings.Table (Warnings.Last).Start <= Loc
and then Loc <= Warnings.Table (Warnings.Last).Stop)
and then Warning_Mode /= Suppress
then
Warnings.Table (Warnings.Last).Stop := Loc;
end if;
end Set_Warnings_Mode_On;
------------------------------------
-- Test_Style_Warning_Serious_Msg --
------------------------------------
procedure Test_Style_Warning_Serious_Msg (Msg : String) is
begin
if Msg (Msg'First) = '\' then
return;
end if;
Is_Serious_Error := True;
Is_Warning_Msg := False;
Is_Style_Msg :=
(Msg'Length > 7
and then Msg (Msg'First .. Msg'First + 6) = "(style)");
for J in Msg'Range loop
if Msg (J) = '?'
and then (J = Msg'First or else Msg (J - 1) /= ''')
then
Is_Warning_Msg := True;
elsif Msg (J) = '<'
and then (J = Msg'First or else Msg (J - 1) /= ''')
then
Is_Warning_Msg := Error_Msg_Warn;
elsif Msg (J) = '|'
and then (J = Msg'First or else Msg (J - 1) /= ''')
then
Is_Serious_Error := False;
end if;
end loop;
if Is_Warning_Msg or else Is_Style_Msg then
Is_Serious_Error := False;
end if;
end Test_Style_Warning_Serious_Msg;
-------------------------
-- Warnings_Suppressed --
-------------------------
function Warnings_Suppressed (Loc : Source_Ptr) return Boolean is
begin
for J in Warnings.First .. Warnings.Last loop
if Warnings.Table (J).Start <= Loc
and then Loc <= Warnings.Table (J).Stop
then
return True;
end if;
end loop;
return False;
end Warnings_Suppressed;
end Erroutc;